Route guide

St. Louis to Chicago (STL-ORD): Nonstop Upgrade & Award Space

United Airlines and American Airlines fly nonstop between St. Louis (STL) and Chicago (ORD), roughly 108 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every STL to ORD departure, so you know which flights have space before you book.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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108
Nonstop flights a week
258 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every STL to ORD departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for St. Louis to Chicago to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each STL to ORD departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See STL to ORD on the interactive route map, with schedules, connections, and route statistics.

Airlines flying St. Louis to Chicago nonstop

Carriers operating STL to ORD nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • United Airlines
  • American Airlines
See STL to ORD on the interactive map →

Frequently asked questions about STL to ORD

How far is Chicago from St. Louis?
STL to ORD covers about 258 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from STL to ORD?
United Airlines and American Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on both of them.
How many flights a week are there from STL to ORD?
About 108 nonstop flights a week run between St. Louis and Chicago in the current schedule, operated by United Airlines and American Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on STL to ORD?
Open the STL to ORD calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the St. Louis to Chicago route, and 2LNR will notify you when space opens. It's free to start.

Never miss STL to ORD upgrade or award space

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